Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGZRumS6HE1sRVNf3/7mziPJ/cknbFWbhUeOUCYl4H9mzCLnHOYvi0qm4pC… (844 chars)"
  }
}